Tristania

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Myrtaceae
Subfamilia: Myrtoideae
Tribus: Tristanieae
Genus: Tristania
Species: T. neriifolia
Name

Tristania R.Br. in W.T.Aiton, Hortus Kew. 4: 417. (1812)

Tristania neriifolia (Sieber ex Sims) R.Br. in W.T.Aiton, Hortus Kew. 4: 417. (1812)

Synonyms

Heterotypic
Callobuxus Pancher ex Brongn. & Gris, Bull. Soc. Bot. France 10: 372. (1863)

Homonyms

Tristania Poir., Encycl. [J. Lamarck & al.] Suppl. 4. 526, in obs. (1816) (Poaceae)

References

Brown, R. in Aiton, W.T. 1812. Hortus Kewensis; or, a Catalogue of the Plants Cultivated in the Royal Botanic Garden at Kew, ed. 2, 4: 417.
Govaerts, R. et al. 2018. Tristania in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2018 Aug. 13. Reference page.
International Plant Names Index. 2018. Tristania. Published online. Accessed: Aug. 13 2018.
Wilson, P.G. & Waterhouse, J.T. 1982. A review of the genus Tristania R. Br. (Myrtaceae): a heterogeneous assemblage of five genera. Australian Journal of Botany 30(4): 413–446. DOI: 10.1071/BT9820413 Reference page.

Vernacular names
English: Water Gum
Tristania is a monotypic genus of flowering plants native to New South Wales, Australia, closely related to Thaleropia.[2] The genus had a number of species, but some have been reclassified as Lophostemon and Tristaniopsis. The sole species currently in the genus is Tristania neriifolia. It is known commonly as the water gum.[3]

It is a small tree, with dense branching. The leaves are evergreen, opposite, simple, lanceolate, 5–9 cm long and 1 cm broad. The flowers are produced in dense clusters of 3–15 together; each flower is 1–1.5 cm diameter, with five small yellow petals and numerous conspicuous stamens.
References

Kew World Checklist of Selected Plant Families
Biffin, E.; Lucas, E. J.; Craven, L. A.; Ribeiro da Costa, J.; Harrington, M. G.; Crisp, M. D. (2010). "Evolution of Exceptional Species Richness among Lineages of Fleshy-Fruited Myrtaceae". Annals of Botany. 106 (1): 79–93. doi:10.1093/aob/mcq088. PMID 20462850.
Tristania neriifolia. Australian Native Plants Society.